Coggon is a city in Linn County, Iowa, United States. The population was 745 at the 2000 census. It is part of the Cedar Rapids Metropolitan Statistical Area.
Coggon was founded in 1857, and celebrated its sesquicentennial in 2007.
Coggon is located at 42°16′45″N 91°31′47″W / 42.27917°N 91.52972°W / 42.27917; -91.52972 (42.279076, -91.529647).